operation takes a long time to complete and potentially could fail on a server. The SyncUpdateCallback callback function enables the application to indicate whether the SyncReplicaFromAllServers method should continue executing. For example, the application could return false to terminate SyncReplicaFromAllServers

execution if an error occurs. Another scenario in which this capability would be used is to terminate SyncReplicaFromAllServers

execution once the application detects that synchronization has completed for a certain target server or source server pair.